Insertion Loss Measurement Setup; Setup For Insertion Loss Measurements - Agilent Technologies HP E5574A User Manual

Figure 3-1
The same setup can be
used to measure the
Polarization Dependent
Loss.
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Taking Standard Loss Measurements
Measuring the Insertion Loss

Insertion Loss Measurement Setup

Signal Processing and Display
Head Input A Head Input A Head Input B Head Input B

Setup for Insertion Loss Measurements

1 Connect the optical output to the input of the device under test
(DUT).
2 Connect the optical head which was used to measure and store
the reference power to the output of the DUT.
3 Activate the optical output.
If you wish to use the internal light source, press S
O to turn the source on. The source indicator lamp must be lit.
FF
If you have connected an external light source to the optical
input, press S
source indicator lamp must be off.
56
Internal
Source(s)
Optical Input Optical Input
O /O to turn the internal source off. The
OURCE N FF
Coupler
Pol. Ctrl.
3 dB
Optical Output Optical Output
Device
under
Test
O /
OURCE N